Spraying device



G. A, MUELLER SPRAYING DEVICE A ril 1, 1930.

Filed Feb. 29. 1928 Patented Apr. 1, 1930 UNITED STATES PATENT OFFICE GODFREY A. MUELLER, OI POINT PLACE, OHIO, ASSIGNOR TO THE DE VILBISS COM- PANY, 0F TOLEDO, OHIO, A CORPORATION OF OHIO srnarme DEVICE This invention relates to a spraying device and especially to means for mountmg the same upon a receptacle which may contain the material to be sprayed, as for example, a painter lacquer compound.

The object of the invention is to provide a device of this kind which is simple in construction and which may be manufactured and sold at a low price, so that it is particularly adapted to be used by an individual who has only a comparatively small amount of work to be done. It is also desirable to provide suitable means for adjusting the nozzles to suit the kind of work being done and the character of the compound being sprayed, so that the work will compare favorably with that done by more expensive equipment.

The specific construction of the invention, in one form in which it may be embodied, and also the advantages resulting from this construction, will be more fully explained in connection with the accompanying drawings, in which- Figure 1 is a plan view of the spraying device attached to a jar.

Fig. 2 is a side elevation of the same with,

parts broken away to illustrate better the construction.

Fig. 3 is a central longitudinal section through the air controlling means.

The invention in its present embodiment is shown in connection with a glass jar 5 having a mouth 6 formed with threads to receive a metal cap 7. A'metallic plate or bracket arm 8 is secured to the top of the cap 7 by welding or the like andv is provided at its outer end with a ring or eye'9 for mounting a handle 10, which may also constitute an air chamber. An inlet nipple 11 is secured to one end of the member 10 and; is adapted to be connected with a hose 12 which leads from a suitable supply of compressed air.

The member 10 is formed with a seat 13 adapted to engage one face of the eye 9. Adjacent the seat 13 the member 10 is formed with internal threads for receiving the re- .duced threaded end 14 of a plug 15, which is formed with a peripheral shoulder 16 adapted to engage the opposite face of the eye 9.

gated in the direction of the nozzle, so that The plug 15 is formed with an internalcavity 17 and the admission of compressed air to this cavity from the member 10 is controlled by a valve 18. This valve has a stem 19 extending outwardly from the plug 15 and formed with a threaded end to receive a button 20. The valve 18 is held normally closed by an expansile coil spring 21 which is mounted in a seat 22 in the outer end of the plug and bears against the inner face of the button 20. The valve may be opened, whenever desired, by pressing on the button 20. A tube 23 is mounted at one end in a hole tapped into the side of the plug 15 and is supported at its other end in a perforated ear 24 which may be cut from the portion of the plate 8 which is adjacent the cap 7. Thus the tube 23 is connected with the air supply and its discharge end is formed with a nozzle 25.'

The supply of material to be sprayed is contained within the jar 5, its level being indicated at a. It is drawn from the jar through a tube 26 which has a threaded upper end 27 secured in the plate 8, the lower end of the tube 26 extending downwardly substantially to the bottom of the jar. The tube 26 is formed with a peripheral shoulder at the base of the threaded port-ion 27 and the tube is screwed tightly into the plate 8 until this shoulder bears against the inside of the cap 7. The threaded end 27 is long enough so that it extends upwardly from the plate 8 to receive a cap 28 which is formed with a discharge nozzle 29.

The nozzle 25 is so located that when the button 20 is pressed the air thus discharged from'the nozzle 25 is forced across the mouth of the nozzle 29, forming a partial vacuum which draws the material from the ar 5 and converts it into a spray, as is well known in the art. The nozzle 29"may be adjusted toward or from the air stream merely by turning the cap 28 on the threaded end 27 of the discharge tube. The eye 9 is somewhat elon- 85 by partially unscrewing the member 10, the latter with the plug 15 may be adjusted to ward or away from the jar, thereby making it possible to adjustthe distance of the nozzle 25 from the material stream. By these two adjustments, therefore, the positions of the two nozzles 25 and 29 may be regulated according to the character of the material being sprayed, so as to give the best results. The method of forming the car 24 by r'essing it from the plate 8 is very economica and may be carried out with suflicient precision for all practical purposes.

While the invention has been described in connection with a lass jar, it is of course apparent that it may e used in connection with any type of receptacle and the arrangement of the various parts may also be considerably modified without departing from the scope of the invention as claimed. The entire equipment may be made and sold as a unit, or the spraying device may be sold as an attachment to be applied by the purchaser to any receptacle which he may have at hand.

What I claim is:

1. The combination with a receptacle for containing material to be sprayed, of a material discharge conduit leading therefrom and having a discharge nozzle, an arm secured to the top of the receptacle and having an opening in its outer end portion, a compressed air conduit, a plug having a threaded connection with the conduit and extending through said opening and provided with an outlet passage, and an air discharge nozzle leading from said passage and directed across the material discharge nozzle, said plug and conduit having cooperating surfaces to clamp them to the edge of the opening in the arm, said opening being long enough to permit adjustment of said air nozzle and conduit toward and away from the material discharge nozzle.

2. The combination with a receptacle for containing material to be sprayed, of a closure for the receptacle having a partprojecting from one side thereof and provided with an opening, a liquid tube projecting down through the closure and into the receptacle and terminating at its upper end in a discharge nozzle, a handle member having two relatively movable parts projected through said opening and capable of adjusting movements in the opening toward andaway from said liquid tube and capable of clamping coaction with the sides of said opening to hold the handle member in adjusted relation to said projecting part, an air tube projecting from said handle for adjustment therewith and having its discharge end terminating adjacent to the discharge end of said liquid tube, said air tube having communication through the handle with a controlled source of air pressure supply.

3. In a device of the class described, a mount, a liquid tube and an air tube carried by the mount with their discharge ends disposed in adjacent angular relation whereby the air discharge is across the discharge end of the liquid tube, said mount having an opening therein, and a handle member projecting into said opening and connected with the air tube, said handle member having a portion which is relatively adjustable to clamp the handle to the mount or to release the same and permit the handle member and air tube to be ad'usted as a unit toward or from the liquid tube.

4. In a device of the class described, a mount, a liquid tube and an air tube carried by the mount with their discharge ends disposed in adjacent angular relation whereby the air discharge is across the discharge end of the liquid tube, said mount having an opening therein, a handle member projecting through said opening, and a head having a screw connection with the handle member to clamp the same to the edges of the opening, said head being connected to the air tube, said handle member having a grip portion which is relatively adjustable to clamp the handle member in said opening or to move the handle member and air tube as a unit toward or away from the liquid tube.

5. In a device of the class described, a mount, a liquid tube and an air tube carried by the mount with their discharge'ends 'disposed in adjacent angular relation whereby the air discharge is across the discharge end of the liquid tube, said air tube being adjustable in the direction of its length, and a handle member connected with the air tube, said handle member having a gri portion which is relatively adjustable to camp the handle to the mount or to release the same and permit the handle and air tube to be adjusted as a unit toward or from the liquid tube, whereby the handle member and air tube may be clamped or released and adjusted by a single hand through the medium of said grip portion.

In testimony whereof I have hereunto signed my name to this specification.

GODFREY A. MUELLER. 

